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Finding the Fourth Proportional to 315,260.80, 472,934.40 and 115,532.80

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Solution

The fourth proportional to 315,260.80, 472,934.40 and 115,532.80 is: 173,315.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,260.80 : 472,934.40 = 115,532.80 : x
  2. Step 2: Convert to fraction form
    315,260.80/472,934.40 = 115,532.80/x
  3. Step 3: Cross multiply
    315,260.80x = 472,934.40 × 115,532.80
  4. Step 4: Simplify right side
    315,260.80x = 54,639,435,448.32
  5. Step 5: Solve for x
    x = 54,639,435,448.32/315,260.80
  6. Step 6: Final answer
    x = 173,315.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.